Shredding-machine.



No. 877,690. 'y PATENTBD JAN. 28, 1908. M. I. WILLIAMS.

SHR-EDDING- MACHINE.

APPLIGATION FILED 15111148.1907.

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MILTON F. WILLIAMS, OF ST. LOUIS, MISSOURI, ASSIGNOR TO WILLIAMS PATENT ORUSHER & PULVERIZER COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

SHREDDING-MACHINE Specification of Letters Patent.

Patented Jan. 28, 1908.

Application filed March 18. 1907. Serial No. 363.138.

T o all who/m 'it may concern:

Be it known that I, MrL'roN F. WILLIAMS, a citizen of the United States, residing` at St. Louis, Missouri, have invented a certain new and useful Improvement in Shredding- Machines, of which the following is a ful, clear, and exact description, such as will enable others skilled inthe art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in whic Figure 1 yis a horizontal sectional view through my improved machine; Fig. 2 is a vertical cross sectional view on the line 2 2 of Fig. l; and Fig. 3 is a detail view of one of the clamping blocks.

This invention relates to a new and useful ticularly to that class which are designed to operate upon the fibrous materials to reduce or shred them into fine particles.

The object of my present invention is to provide a means for clamping the grinding surface in position so that said grinding surface may be readily removed.

I have found by experiment that when machines of this character operate upon guayula the gummy substance exudcd by the plant fills up the various crevices around the grinding surface, and when it is desired to remove the grinding surface for purposes of cleansing or renewal, the hardened gummy substance acts 'practically as a cement rendering the removal of the grinding surface exceedingly difficult.

In the drawings, A indicates the casing of the machine, the upper half of which is removable.

2 are feed rollers between which the material to be operated upon is fed into the machine and over a bar 3. This bar, as shown, is made up of several sections appropriately secured together so that the Wearing surfaces ofthe bar may be' removed.

4 is a shaft on which arel mounted the hammer'v supports 5, said hammer supports yas shown in Figs. 2

sections occurring in the horizontal plane of the shaft where the casing is divide( By referring to Fig. 2 it will be observed that the side members of the frame diverge or flare outwardly approximately around thegrinding surface so as to form an enlarged chamber.

Fitting against the inner iiaring faces of the side walls of the casing are clamping blocks 10, which blocks are each preferably provided with stud bolts extending through slots in the side frame, and having nuts on their outer ends whereby said blocks may be clamped in position. The inner ends of these blocks are recessed to provide seats for the curved side bars of the grinding surface, and 2%. Each of the clamping blocks is formed with an opening in its outer end, in which opening operates a cam l1.

12 are rods on which the cams 1l are mounted, there being two cams on each rod. One end of each rod l2 is provided with Aa worm wheel 13.

14 is a shaft mounted in suitable bearings extending from the side walls of thc casing, and upon which shaft are arranged worms 15 for engaging kthe worm wheels 13 identified with the clamping devices of the lower sec` tion of the grinding surface.

16 indicates a rod having worms for engagement with wheels identified with the clam )ing devices of the upper section of the grin ing surfaces.

17 is a removable handle adapted to fit the ends of rods 14er 16, whereby said rods may be rotated soas to force the blocks 10 inwardly or outwardly as the case may be.

In operation if it is desired to remove the grinding surface, the upper portion of the casing is lifted, which gives access to the u'ppensection of the grinding surface, enabling the same to be removed quickly as its onlypoints of supporting contact are those afforded by the clamping blocks 10. This supportingcontact is preferably in the nature of a machine-fit so that there is little liability of the entrance` of material operated ,upon in the machine so as to efl'ecta cementblocks outwardly. Moving outwardly in diverging lines, the supporting blockswill be forced to se arate from the grinding surface section. Aiter the top section of the casing has been removed, the rod 14 can be rotated so as to` move the supporting blocks 10 cooperating with the lower grinding surface section outwardly in diverging lines, which will release the lower section. of the grinding surface and enable its ready removal. When a new section isv to be introduced or when the sections of the grinding surface are introduced, the supporting blocks are preferably adjusted to their outermost position and are then moved inwardly so as to clamp the grinding sections firmly in position.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1.v In a machine ofthe character described, the combination with a removable rinding surface formed in sections, blocks iol supportingone section of said grinding surface in position, and means common to all of said blocks for operating them simultaneously; substantially as described.

2. In a machine of the character described, the combination with a removable grinding surface formed in sections, of a l lurality of supports for holding one section o 'said grinding surface in position, and means for simultaneously moving said supports in divergent directions to release said grinding surface g substantially as described.

3. In a machine of the character described, the combination with side frame plates, of a removable grinding surface arranged between said side frame plates and provided with openings through Which the`material passes, said side frame plates Haring outwardly so as to provide an enlarged space around said grln'ding surface, and means for supporting said removable grinding surface in position, ,said supporting means being located in said enlarged space so as not to obstruct the openings in the grinding surface; substantially as described.

4. a machineei the character described, the combination 'with a removable member forming a portion oi a grinding surface, of va plurality of supporting blocks arranged at angles to each other. and cooperating with said grinding surface member, a cam cooperatinv` with each of said blocks, and meansA I cams; substantially as described.

5. In a machine ofthe character described, the combination with a concentrically-arranged removable rinding surface divided into sections, of radially disposed supporting blocks therefor, a rotatable shaft, and means operated by said shaft and cooperating with devices connected to said'blocks whereby two or more of said supporting blocks are moved in a radial direction when said shaft is rotated; substantially as described.

o. In a machine of the character described, thev combination with a substantially curved removable member forming a section of a grinding surface, of radially arranged supporting blocks cooperating therewith, cams cooperating with said blocks, gear wheels conjoined to 'said cams, vand a gearing connecting said gear Wheels so as to o erate all of said cams in unison; substantie. ly as described. l

In testimony whereof I hereunto affix my signature in the presence of two witnesses, this twelfth day of March 1907.

MILTON F. WILLIAMS.

Witnesses:

F. R. CORNWALL, Geenen BAKEWELL.

or simultaneously rotatingv said 

